package com.cn.web;

import com.cn.pojo.User;
import com.cn.service.UserService;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet("/registerServlet")
public class RegisterServlet extends HttpServlet {
    private UserService service = new UserService();

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //1.获取用户名和密码数据
        String username = req.getParameter("username");
        String password = req.getParameter("password");

        User user = new User();
        user.setUsername(username);
        user.setPassword(password);

        //获取用户输入的验证码
        String checkCode = req.getParameter("checkCode");

        //程序生成的验证码，从Session中获取
        HttpSession session = req.getSession();
        String checkCodeGen = (String)session.getAttribute("checkCodeGen");
        //对比
        if(!checkCodeGen.equalsIgnoreCase(checkCode)){
            req.setAttribute("register_msg","验证码错误");
            req.getRequestDispatcher("/register.jsp").forward(req,resp);
            //不允许注册
            return;
        }

        //2.调用Service注册
        boolean flag = service.register(user);
        //3.判断注册成功与否
        if(flag){
            //注册功能，跳转登录页面
            req.setAttribute("register_msg","注册成功，请登录");
            //获得这个jsp,然后执行这个请求
            req.getRequestDispatcher("/login.jsp").forward(req,resp);
        }else{
            //注册失败，跳转到注册页面
            req.setAttribute("register_msg","用户名已存在");
            req.getRequestDispatcher("/register.jsp").forward(req,resp);
        }

    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
       this.doGet(req, resp);
    }
}
